Improvement in looms



PATENT HENRY DALE, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN LOOIVIS.

Specification forming part of Letters Patent No. 58,609, dated October 9, 1806.

To all whom 'it may concern.-

Be it known that I, HENRY DALE, of Philadelphia, Pennsylvania, have invented an Improvement in Looms; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to improvements in that class of looms in which a number of heddles are used for operating the warpthreads, so as to produce figured fabrics 5 and my improvements consist, first, in the arrangement in respect to the frame and jacks ofa shaft carrying a cylinder with pins or other equivalent device for operating thejacks, the said arrangement being such that the cylinder or its equivalent may be readily detached from the loom when a change of pattern is required in the fabric; second, in a certain simple arrangement of gearing, described hereinafter, foroperatin g the said pattern-cylinder from the cam-shaft ofthe loom; third', in au arrangement of graduated pulleys, described hereinafter, for guiding the heddle-cords and jacks.

In order to enable others skilled in the art to make and use my invention, I will now pro ceed to describe its construction and operation.

On reference to the accompanying drawings, which form a part of this specification, Figure l is a rear view of sufficient of a loom to illustrate my improvement; Fig. 2, a side View, looking in the direction of the arrow, Fig. l; and Fig. 3, a sectional plan on the line] 2, Fig. 2.

A is one of the frames of a loom, in which turn the crank-shaft B and the usual cam-shaft C, the opposite journals of the said shaft turning in the opposite frame, and on the end of the crank shaft which extends beyond the side frame, A, is secured a crank-wheel, E.

On a stationary shaft, F, secured to the side frame, A, turn a number of grooved pulleys, a a a, over each of which passes a cord, b, one end of the latter being attached to one of the usual heddles of the loom, and the other end to one of a number of jacks, G, which slide in a slotted guide-plate, H, secured to the frame A, the pulleys a c being so graduated in size that the ends of all the cords b secured to the jacks G shall be nearly parallel to each other, as shown in Fig. 1, for a purpose described hereinafter. v

On the shaft C, near the frame A, is secured a pinion, x, the teeth of which are adapted to those of a cog-wheel, m, on a shaft, I, the latter turning in the frame A, and its outer end extending beyond the jacks G, and on the op-v posite end or" the shaft C is a cog-wheel, which gears into a pinion on the shaft B, the latter wheel and pinion not being shown in the drawm gs.

On the outer end of the shaft I lits a detach able cylinder, J, from the face of which project pins c c; and to the lower ends ofthejacks G are 4secured springs d, which tend to maintain the front edges of the said jacks in contact with the cylinder J.

On the rear edge of each jack, near the lower end of the same, is a projection, c, the purpose of which will be described hereinafter.

To an adjustable bar, q, on the side frame, A, is hung a lever, K, which is connected by a rod, j', to a piu on the crank-wheel E, and on the end of this lever is secured a bar, a,occupying a position at the rear of the jacks.

When the loom is in operation, the cylinder J will rotate, anda vibrating motion will be imparted to the lever IC, so that the bar a will move up and down adjacent to the rear edges of thejacks G. So long as the front edge of a jack is in contact with the cylinder J it will not be affected by the movementof the bar a. When, however, one of the pins c comes in contact with one of thejacks and pushes the t latter backward, the projection c of that jack will be within range of the vibrating bar, which will thus depress the jack and elevate the heddle connected with it. It will thus be seen that the operation of the heddles, and consequently the pattern of the fabric, will be regulated by the arrangement of the pins on the cylinder.

When a pattern is to be changed, the cylinder I is removed by sliding it laterally from the shaft to make way for another cylinder having pins arranged in a different manner. A plain cylinder may be used for the purpose of carrying a chain having proj ectious, which regulate the pattern in the same manner as the pins on the cylinder.

Ferca.

leys and cords. Anintermittent lateral, as

well as a rotary, motion may also be imparted to the cylinder I, so as to move it alternately to and from the jacks.

The bar a, instead of being secured to a lever,may be arranged to slide in vertical guides adjacent to the jacksGwithout any change in the result.

Without confining myself to the precise construction and arrangement of parts herein described, I claim as my invention, and desire to secure by Letters Patentl. The within-described arrangement in respect to the frame A and the jacks of the shaft I, for the reception and removal of the cylinder J, or its equivalent.

2. The combination and arrangement on the loom of the cam-shaft C, wheels x and m, and shaft l, as specified.

8. The combination and arrangement of the graduated pulleys t a, the jacks G, and the heddle-cords, as set forth.

In testimony Whereoflhave signed my name to this specification in the presence of two subscribing witnesses.

HENRY DALE.

Witnesses:

CHARLES E. FOSTER, JOHN WHITE. 

